The robot needs _______ once a month. And we will check it for you for free.
#48844
A
to check
B
checked
C
checking
D
to checking
推荐题目
—Why are you so excited?—Lucy invited me ______ to her birthday party.
#49871
A
to go
B
go
C
going
D
went
Maria has _____ trouble _____ math, so she often asks her math teacher for help.
#49150
A
much; understanding
B
no; with
C
many; understanding
D
not; to understand
Please ask your friends___________so much noise．
#49587
A
not to take
B
don’t take
C
not to make
D
don’t make
You are never ________ old _________ dream a new dream.
#48636
A
very, to
B
so, that
C
such, that
D
too, to